Of the three original mounds overlooking Bayou Pierre, only one remains. A pyramidal platform, Mound A is currently 16 feet tall. Excavations indicate that Native Americans built the mound in multiple stages during the Coles Creek Period, from AD 1000-1200, though it was probably used until ca. AD 1350. A fourth mound, located half a mile southwest of Mound A, was also built during the Coles Creek Period, and may have been part of the Bayou Pierre site.
